Rewards Card

Rewards Card

Rewards Card

A scalable billing and invoice experience that helps users understand consolidated charges, identify each payment, and track billing records over time.

A scalable billing and invoice experience that helps users understand consolidated charges, identify each payment, and track billing records over time.

A scalable billing and invoice experience that helps users understand consolidated charges, identify each payment, and track billing records over time.

My role

My role

Lead Product Designer

The team

2 PMs, 2 Growth PMs,
4+ Engineers, 1 Copywriter, 1 QA

Scope

Scope

IA, order history, invoice design

Overview

Overview

Overview

Between 2023 and 2025, the referral experience evolved from a simple standalone page into a structured, scalable Rewards Center. While referral has long been a key growth channel for US Mobile, the previous experience lacked clarity, visibility, and system cohesion. As the sole UX designer, I led multiple releases to redesign referral flows, introduce reward states and tracking, and reorganize the experience into a centralized Rewards Center, improving usability, transparency, and long-term scalability.

Between 2023 and 2025, the referral experience evolved from a simple standalone page into a structured, scalable Rewards Center. While referral has long been a key growth channel for US Mobile, the previous experience lacked clarity, visibility, and system cohesion. As the sole UX designer, I led multiple releases to redesign referral flows, introduce reward states and tracking, and reorganize the experience into a centralized Rewards Center, improving usability, transparency, and long-term scalability.

Key takeaways

Key takeaways

Shaping clarity instead of waiting for it

Like many cross-functional projects, this initiative evolved over time, with shifting scope and open questions. Rather than waiting for every detail to be defined, I learned to move forward by researching comparable systems, gathering user insights, and testing possible directions. This helped me contribute proactively while staying aligned with stakeholder input. I realized that clarity is often shaped through action and collaboration, not just handed down at the start.

Like many cross-functional projects, this initiative evolved over time, with shifting scope and open questions. Rather than waiting for every detail to be defined, I learned to move forward by researching comparable systems, gathering user insights, and testing possible directions. This helped me contribute proactively while staying aligned with stakeholder input. I realized that clarity is often shaped through action and collaboration, not just handed down at the start.

Designing thoughtfully within constraints

Working with third-party and compliance requirements taught me that constraints are not always binary. Some requirements are fixed, while others allow room for interpretation when we align on shared goals. I learned to ask deeper questions about intent: understanding what was truly required versus how it was initially proposed. Through open discussion with Product and partners, we were able to meet compliance needs while refining the experience to reduce friction.

Working with third-party and compliance requirements taught me that constraints are not always binary. Some requirements are fixed, while others allow room for interpretation when we align on shared goals. I learned to ask deeper questions about intent: understanding what was truly required versus how it was initially proposed. Through open discussion with Product and partners, we were able to meet compliance needs while refining the experience to reduce friction.

This case study is still growing 🌱 More details coming soon.
This case study is still growing 🌱 More details coming soon.

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Designed and built by Ningning Zeng © 2026

Designed and built by Ningning Zeng © 2026